Lamp attachment



A. A. COBB.

LAMP ATTACHMENT. APPLICATION HL'ED JULY 14, 1920.

Patented May 30, 1922.

.- Y citizen of the United States of America, re-

STATES PATENT OFFICE.

AUGUSTUS A. COBB, OF MARIQN, MASSACHUSETTS.

LAMP ATTACHMENT.

' Application filed July '14,

To all whom it may concern:

Be it known that I, AUGUSTUS A. COBB, a

without serving as a means of blinding or otherwise interfering with the operations of the driver of an approaching car or a car traversing the same road in the opposite direction, and in this connection to provide an attachment which may be generally classified as a dimmer for headlights Wl1lCl'l.'Wlll comply in its functions with the requirements and regulations prescribed and adapt.- ed by municipal count and State authorities for the guidance 0 the drivers of automobiles; and with these objects in view the invention consists in the construction and combination of parts of which a preferred embodiment is shown in the drawing whereapplied in the operative position to an automobile lamp or headlight.-

Figure 2 is a longitudinal sectional view of the same.

Figure 3 is a front view thereof.

The device consists essentially of a forwa'rdly reduced or contracted -shell 1O provided at its rear end with a collar 11 of a shape and size adapted to be fitted upon the casing '12 of an. automobile lamp or headlight, it being preferable to so construct the collar as to adapt it tobe. removably fitted upon the lamp casing so that it may be applied ordetached as re quired, to the end that it may be used when necessary and may be omitted when it is preferred tame the lamps or headlights 1n the ordinaryway or without restrictionof the rays of light projectin therefrom.

Inthe illustrated embo iment of the in- Specification of Letters Patent.

Figure 1 is a side view of the attachment,

Patented May 30, 1922.

1920 Serial No. 396,099.

vention the shell .is inclined downwardly and forwardly at its upper side, or with relat on to lts upper wall without substan 'tial modification of the position of the wall which ma be projected forward substantially in t e horizontal plane of the lower side of the attaching collar 11, and at its-forward end the shell is provided with a transversely elongated but vertical reduced nozzleor outlet sleeve 13 in which is fitted the lens 14. The forwardly and downwardly inclined upper wall of the shell serves to intercept the rays of light projected horizontally from the center of the headlight or lamp 12 and also the rays which are projected through that portion.

of the front of the headlight casing which is above the horizontal plane of the center, the said rays from the upper portion of the lamp being diverted by the inner surface of the inclined upper wall of the shell and caused by reflection to intersect and mingle with the rays which are projected from thelower portion of the lamp or the portion thereof below a horizonal plane extending through thecenter of the lamp, with the result that the light rays permitted to escape through the transversely elongated outlet sleeve of the dimmer attachment are projected in a plane below that occupied by the eyes of the drivers of approaching vehicles and yet serve to illuminate the road surface in advance ofthe vehicle provided with the attchment. Consequently whereas the blinding effect upon the eyes of the drivers of approaching vehicles is avoided, the path of the car equipped with the attachment is lighted sufiiciently to serve, as a guide for the drivers of both cars.

Having described the invention, I claim:,

A headlight dimmer attachment having a shell provided with means for attachment to the casing of an automobile headlight,

and anoutlet sleeve disposed at the forward end of the shell with its lower wall in the plane of the lower wall of the shell, the outlet sleeve being transversely elongated and the top wall of the shell being inclined "downwardly and forwardly and merging with the upper wall of the sleeve.

In testimony whereof he afiixes his Sig-' nature.

AUGUSTUS A. COBB. 

